Union climate

Union Weather in April

NOAA 1991-2020 normals for Marengo, 6.4 km from Union

Average highs run from 52°F on April 1 to 65°F on April 30, and lows from 31°F to 42°F. Normal precipitation for the month is 3.81 in over about 11 wet days.

April day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Union, in °F, with the record for each date.020406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

April at a glance

Average high
59°F
Average low
36°F
Precipitation
3.81 in
Snowfall
0.4 in
Record high
92°FApr 26, 1986
Record low
8°FApr 7, 1982
Chance of a freeze
100%
Daylight
12 h 43 min to 14 h 02 min
Cloud cover
66%
Humidity
76%
Dew point
39°F
Wind
12.3 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Apr 152°F31°F84°F 198616°F 198729%2%
Apr 253°F31°F83°F 201018°F 201830%2%
Apr 353°F32°F79°F 200315°F 198730%2%
Apr 454°F32°F77°F 199613°F 197530%2%
Apr 554°F32°F77°F 199117°F 197531%2%
Apr 655°F33°F82°F 198812°F 198231%2%
Apr 755°F33°F78°F 19918°F 198232%2%
Apr 855°F33°F79°F 200112°F 197232%2%
Apr 956°F34°F77°F 200118°F 199732%2%
Apr 1056°F34°F83°F 197719°F 199733%2%
Apr 1157°F34°F83°F 197725°F 197333%2%
Apr 1257°F35°F82°F 197123°F 197634%2%
Apr 1358°F35°F81°F 202320°F 198934%1%
Apr 1458°F36°F84°F 200622°F 198935%1%
Apr 1559°F36°F85°F 200319°F 202035%1%
Apr 1659°F36°F87°F 200222°F 201435%1%
Apr 1759°F37°F87°F 200224°F 202036%1%
Apr 1860°F37°F87°F 198521°F 199036%1%
Apr 1960°F38°F90°F 200222°F 198336%1%
Apr 2061°F38°F84°F 198528°F 198837%1%
Apr 2161°F38°F89°F 198722°F 198837%1%
Apr 2262°F39°F91°F 198023°F 198637%1%
Apr 2362°F39°F91°F 198028°F 196737%1%
Apr 2462°F40°F81°F 199024°F 196737%1%
Apr 2563°F40°F85°F 199028°F 196738%1%
Apr 2663°F40°F92°F 198630°F 197238%1%
Apr 2763°F41°F91°F 198628°F 197638%1%
Apr 2864°F41°F88°F 198625°F 199238%1%
Apr 2964°F41°F87°F 197027°F 197738%0%
Apr 3065°F42°F87°F 197032°F 201838%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Union, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

April 1
sunrise 6:37 AM, sunset 7:20 PM
April 30
sunrise 5:51 AM, sunset 7:53 PM

Every day of April: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00115326 (Marengo), public domain. Records: NOAA GHCN-Daily, station USC00112223, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.